any help on 95 sputtering wont rev over 2k

[sled]

new to the sho world, i just got a 95 its suppose to have a 3.2 short block swap, its a 5 speed, ill be driving and it will start sputtering like out of gas, it wont rev over 2k rpms, if i can get it to rev over 2k i have to keep the rpms up over 3500 to keep it driving i got a check engine light i need to get an obd1 scanner to read the codes, any first things i should check any help is much appreciated

 

[Off Road SHO]

Oil in the spark plug wells, an open ground path for the DIS module on the crossover plenum, a really dirty filament on the Mass Airflow Sensor, not enough fuel pressure due to a weal old pump or a really clogged fuel filter, really old spark plug wires and or spark plugs....

Tom

 

[sled]

also i should mention the car has a cowl hood and we were having a rain storm yesterday when it happened

 

[jimtash]

You just answered your question. Pull the rear plug wires and you will find water on them and in the plug wells.

Cars with cowl hoods always seem to have that issue. Might want to consider replacing it.

 

[sled]

where is the obd1 port on this cars? i borrowed a scan tool from a friend so i can run the codes, i have no cats so which codes should be ignored

 

[93markVIII]

a 95 won't throw any cat related codes.

 

[rubydist]

contrary to what you said in the first post, you do not need a scan tool to read codes on these cars - all you need to do is be able to count.

the obd1 port is on the firewall just behind the power steering pump. if you have the black plastic cover like originally was there, it is tucked into a little plastic holder on the front of that cover. if you don't have that cover, it is laying on top of the wiring harness / power steering hoses in that area.

read the codes and tell us what they are.

 

[sled]

codes 122 and 10 , tps voltage and cyl problem im thinking the water in the well from the cowl hood for cyl 1 problem and then just change my tps to fix the other problem

 

[rubydist]

you either have 2-digit or 3-digit codes, there is no mixing.

read them again and count correctly.

 

[SHOspazz92]

Have you pulled the rear spark plug wires to see if there is water/oil in the plug wells yet?

-Sam

 

[SuperHO]

Tampons work great for getting water out of plug wells....

 

[sled]

still having problems with this no water in wells, tried swapping the dis still having reving issues , wont go passed 2k rpm, push the clutch in hold the gas and hope it revs sometimes it will and if i keep it over 2500 rpms it will drive but when i come to a red light i have the problem again, someone i knoe mentioned maybe the pcm is bad behind the glove box, any help advice before i go wasting more money i dont have

 

[ctubutis]

.....

 

[Irish Pride]

Pull the codes and see what it says. The TPS could be your problem though as you've already mentioned.

 

[SuperHO]

Random thought....check the ground strap between the back of the intake manifold to the firewall. First, make sure it's there (back left by the diagnostic port). Second, make sure its tight and the connections are clean at both ends. Then make sure the two 12mm bolts holding your crossover tube are good n tight.

*EDIT
You forgot to mention if this was an intermittent problem or always present. It could also be the canister purge solenoid....

 

[rubydist]

canister purge solenoid will have nothing to do with keeping the engine from revving over 2500 rpm. I know this for a fact from personal experience.

lets stop speculating and wait until we get the codes so we can really help him.

 

[sled]

codes i can remember off top my head were 112 114 542 i wrote them on my hand while i was working on it and have washed it off ill have to get it again i have the digitail scan tool so its the numbers not the light blinking, did it with motor off and cold got a bunch of coolant temp low/high codes , and i swear code 10 popped up

the car only does it when its warm and under a load, i will scan the codes and write them on paper tomorrow

 

[sled]

i changed the tps with a new one no fix, and i swapped the dis with a known good one no change

 

[ctubutis]

.....

 

[sled]

i will read the instructions and do it again tomorrow, thanks for the insight